Finite Element Analysis of Temperature Induced Stresses and Deformations of Polymer Composite Components
Finite Element Analysis of Temperature Induced Stresses and Deformations of Polymer Composite Components
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DOI：
10.1106/76g7-x9qm-c5jf-e4d5
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发表时间：
2000-09
影响因子：
2.9
通讯作者：
J. Wang;D. Kelly;W. Hillier
中科院分区：
文献类型：
--
作者：
J. Wang;D. Kelly;W. Hillier
由于复合材料的异质性，在复合产品的制造过程中会产生残余应力。这样的应力可以从工具形状改变部件的最终形状。许多研究人员用解析方法研究了厚圆筒形零件的温度诱导应力和变形。然而，这些方法不能解决任意几何形状的厚复合材料组件。采用有限元分析软件ABAQUS进行分析。通过显微组织分析确定了复合材料的力学性能和热性能。不同的元素类型进行了比较，就其预测精度。本文讨论了有限元法的应用技术。预测了90°角处曲率变化时的回弹值。合理良好的预测和测量之间的协议实现。
Due to the heterogeneous nature of composite materials, residual stresses build up during manufacture of composite products. Such stresses can change the final shape of a component from the tool shape. Temperature induced stresses and deformations of thick cylindrical parts have been studied by a number of researchers using analytical approaches. However these approaches cannot solve a thick composite component with arbitrary geometry. Finite-element-method (FEM) analysis was conducted in this study using ABAQUS. Mechanical and thermal properties of composite materials were determined through microstructure analysis. Different element types were compared with respect to their prediction accuracy. The technique of application of FEM is discussed in the paper. Spring-in values of 90° angles with varying curvature at the corner are predicted. Reasonably good agreement between the prediction and the measurement is achieved.